"Verily, We have been down (al-Qur-an) on the night of glory. And you know what the Night of Power is? Night of Power is better than a thousand months. At night it drops Angel-Angel and the Angel Gabriel with the permission of his Lord to regulate all affairs. That night (full) welfare until dawn. "[Al-Qadr: 1-5]

It was narrated from 'Aisha radi anhuma, he said that the Prophet sallallaahu' alaihi wa sallam retreat in the last ten days of Ramadan, and he said:

I'tikaf Sunnah for the person to occupy themselves with any form of obedience to God, such as prayer, reading al-Qur'an, saying the rosary, tahmid, tahlil, and Takbir, beristighfar, read the above blessings on the Prophet, praying, studying and others.

And dimakruhkan for them to occupy themselves with things that are not beneficial, whether it be actions or words. So also with restraint to not speak because he considered it as one form of approach to God.

Permissible for people to retreat out of place because there is an urgent need, as well as permissible for them to comb your hair and shave, cut nails and clean the body. I'tikaf someone will be void if he is out of place i'tikafnya without any immediate need and also if he had sexual intercourse.